Valve stem assembly



=March 19, 1935. J, lNGRAM 1,995,100

VALVE, STEM ASSEMBLY Filed Sept. 11, 1954 Inventor fa/m fragrarw,

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Attorney Patented Mar. 19, 1935 I UNITED STATES PATENT OFFICE VALVE STEM ASSEMBLY- John Ingram, Clarkelen, Wyo., assignor of onethlrd to C. M. Renyolds, Savageton, Wyo.

Application September 11,1934, Serial No. 743,581

2 Claims. (01. 152-12) This invention relates to a valve stem assembly shown in Figure 1.- The outer end of the stem 1 to be embodied in tires and the like, the general is threaded as shown at 13 to receive the usual cap. object of the invention being to provide a simple As. it will be seen the U-shaped member 9 acts form of device in which the air pressure tends to as an anchor for the spring, said spring acting hold the valve closed and which eliminates the to hold the valve upon its seat and due to the 5 internal threaded parts of the tubes or valve formation of the valve and its seat the air presassembly and the rubber portions thereof. sure in the tube acts to hold the valve upon the This invention also consists in certain other seat. The valve can be forced off the seat by features of construction and in the combination depressing the stem '7 by hand or by the usual and arrangement of several parts, to be hereinchuck when the tire is being inflated. 10 after fully described, illustrated in the accom- As it will be seen this valve eliminates the panying drawing and specifically pointed out in internal threaded part of the stem as well as the appended claims. rubber part now in use so that this improved In describing the invention in detail, reference stem will last much longer than the stems now in will be had to the accompanying drawing whereuse and it will hold the pressure in the tire much 5 in like characters denote like or corresponding longer so that it is not necessary to inflate the parts throughout the several views, and in tire as frequently as with the devices now in use.

which; It is thought from the foregoing description Figure l is a longitudinal sectional view through that the advantages and novel features of the inthe improved valve assembly. vention will be readily apparent. 0

Figure 2 is a fragmentary view taken at right It is to be understood that changes may be angles to Figure l and showing the notches in made in the construction and in the combination the outer end of the stem. n rr n ment of the several parts, provided Figure 3 is a. view of the valve member with that such changes fall within the scope of the the spiral grooves therein for receiving the lower app d d claims. 25

end of the spring. What is claimed is:-

In this drawing, the numeral 1 indicates the 1. A valve st m assem ly comprisin a tubular tubular stem which is provided with the base stem having a valve seat at its inner end, a valve part 2 and a threaded portion 3, these portions engaging the S a a Stem connected with the acting t ld the stem in the tube and rim in valve and projecting from the outer end of the 30 the usual manner. A valve seat of tapered tubular stem, a spring connected with the valve, formation is formed at the lower end of the stem and a member s pp d on the Oute end of the to be engaged by the substantially frustrotubular stem and engaging the spring. conical valve 4 which has a cylindrical part 5 at 2. A valve stem assembly comp a ubu ar its outer and small end which is formed with the stem having a valve seat at its inner end, a valve spiral groove 6. The stem 7 is connected with en a ing th s a a d h v a, ndr a p rthis part 5 at the center thereof and is long enough tion formed with a spiral thread, a spring having to project from the outer end of the stem so that oneend threaded to said threaded par a m the stem 7 can be pressed upon to force the valve 4 connected to the threaded part and extending off of its seat when the tube is to be deflated. om the outer end of the tubular stem and A coil spring 8 has one end threaded in the groove U-shaped member having its bight connected 6 and the other end engages the bight of a with the spring and provided with hooks at its U-shaped member 9 which has hooks 10 at its ends engaging over projections formed by notches ends which engage projections 11 formed by in the outer end of the tubular stem. notches 12 in the outer end of the stem 1 as JOHN INGRAM. 

